Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
lang van » dang van, tang van, hoang van
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
lang ha » long ha
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky ((tang ma) or (((lang ha) or (lang van)))) hoi. hieu va cam duc va thanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((tang ma) OR (((lang ha) OR (lang van)))) hoi. hieu va cam duc va thanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((tang ma) or (((lang ha) or (lang van)))) hoi. hieu va cam duc va thanh vai cua tre*.